LAN9253T/R4X Microchip Integrated Circuit (Quad Flat No-Lead) In Stock

Name: LAN9253T/R4X
Brand: Microchip
SKU: LAN9253T/R4X
Availability: InStock

The LAN9253T/R4X is an EtherCAT slave controller IC from Microchip featuring a 64-pin QFN package with SPI and I2C host interfaces and a 25 MHz clock. It includes boundary scan support and NRZI data encoding for robust industrial Ethernet connectivity. Designed for servo drives, industrial robots, motion control modules, and factory automation nodes requiring real-time EtherCAT communication.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LAN9253T/R4XQuad Flat No-Lead

Quick Facts

Manufacturer: Microchip
Package: Quad Flat No-Lead
Pin Count: 64
Lifecycle: ACTIVE
Datasheet: LAN9253T/R4X Datasheet PDF
Category: Integrated Circuit
Price: From $6.7600(MOQ 100)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LAN9253T/R4X?

EtherCAT slave controller with 25 MHz maximum clock
SPI and I2C host interface compatibility
16-bit address bus with boundary scan (JTAG) support
NRZI data encoding for industrial Ethernet robustness
Compact 64-pin QFN package for dense PCB layouts
Synchronous byte communication protocol support

What is LAN9253T/R4X used for?

The LAN9253T/R4X enables real-time EtherCAT fieldbus connectivity in industrial automation equipment including servo motor drives, distributed I/O modules, and robotic joint controllers. Its SPI host interface allows direct connection to virtually any microcontroller or DSP without requiring an external PHY, reducing BOM complexity in motion control designs. The QFN-64 package and factory-in 2020 introduction date make it a modern choice for new EtherCAT slave node designs targeting IEC 61158 compliance.

What are the specifications of LAN9253T/R4X?

Manufacturer Package Code	QFN-64
Factory Lead Time	15Weeks
Date Of Intro	2020-08-18
YTEOL	19
Address Bus Width	16
Boundary Scan	YES
Bus Compatibility	I2C; SPI
Clock Frequency-Max	25MHz
Communication Protocol	SYNC, BYTE
Data Encoding/Decoding Method	NRZI
Data Transfer Rate-Max	12.5MBps
External Data Bus Width	16
JESD-30 Code	S-XQCC-N64
JESD-609 Code	e3
Low Power Mode	YES
Number of Serial I/Os	4
Package Body Material	UNSPECIFIED
Package Equivalence Code	LCC64,.35SQ,20
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Supply Voltage-Max	1.26V
Supply Voltage-Min	1.14V
Supply Voltage-Nom	1.2V
Surface Mount	YES
Technology	CMOS
Terminal Finish	Matte Tin (Sn)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	QUAD
uPs/uCs/Peripheral ICs Type	SERIAL IO/COMMUNICATION CONTROLLER, LAN
Package	Quad Flat No-Lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Taiwan, Thailand

Where can I find the LAN9253T/R4X datasheet?

LAN9253T/R4X Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for LAN9253T/R4X?

Compatible alternatives and drop-in replacements for LAN9253T/R4X:

LAN9253/R4XMicrochip Technology Inc LAN

Controller, 4 Channel(s), 12.5MBps, CMOS

View Part →

LAN9253-I/R4XMicrochip Technology Inc LAN

Controller, 4 Channel(s), 12.5MBps, CMOS

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What host interface options does the LAN9253T/R4X support, and which is better suited for a low-pin-count microcontroller?

The LAN9253T/R4X supports both SPI and I2C host interfaces, operating at up to 25 MHz. For a low-pin-count microcontroller with limited GPIO, the I2C interface requires only 2 wires for full communication, whereas SPI uses 4 signals but offers higher throughput for real-time EtherCAT data exchange. In demanding motion control applications with tight cycle times under 1 ms, SPI at 25 MHz is the preferred choice over I2C.

How does the LAN9253T/R4X's boundary scan support simplify PCB validation during EtherCAT node production testing?

Boundary scan (JTAG) support in the LAN9253T/R4X allows automated in-circuit testing equipment to verify all 64 pins for solder opens, shorts, and connectivity without applying full system power, reducing test fixture complexity. For a production run of 1000 EtherCAT slave boards, boundary scan testing can catch assembly defects in under 30 seconds per board compared to 5 to 10 minutes for manual probe testing, improving throughput and reducing rework cost.

When is the LAN9253T/R4X a better fit for an EtherCAT slave design than a discrete solution using a separate PHY and FPGA?

The LAN9253T/R4X integrates the EtherCAT slave controller logic, PHY interface, and SPI/I2C host bridge into a single 64-pin QFN IC, eliminating the need for a separate PHY chip and FPGA or ASIC for EtherCAT protocol handling. This integration reduces BOM by approximately 10 to 15 components, shrinks PCB footprint by roughly 30%, and avoids the firmware complexity of implementing EtherCAT slave logic in an FPGA, making it ideal for volume production of distributed I/O and drive amplifier modules.

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AvailabilityIn Stock

Reference Price (USD)

From $6.7600

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
100+	$7.7200	$772.00
1000+	$7.1300	$7130.00
5000+	$6.7600	$33800.00

pcs

Unit price: $7.7200 · Total: $772.00

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LAN9253T/R4X Microchip Integrated Circuit (Quad Flat No-Lead) In Stock

What are the key features of LAN9253T/R4X?

What is LAN9253T/R4X used for?

What are the specifications of LAN9253T/R4X?

Compliance & Regulatory

Where can I find the LAN9253T/R4X datasheet?

What are equivalent replacements for LAN9253T/R4X?

Frequently Asked Questions

What host interface options does the LAN9253T/R4X support, and which is better suited for a low-pin-count microcontroller?

How does the LAN9253T/R4X's boundary scan support simplify PCB validation during EtherCAT node production testing?

When is the LAN9253T/R4X a better fit for an EtherCAT slave design than a discrete solution using a separate PHY and FPGA?

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